*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.timeline ul li {
    list-style-type: none;
    position: relative;
    width: 6px;
    margin: 0 auto;
    padding-top: 20px;
    background: #fff;
}
.timeline ul li::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%) rotate(45deg);
    width: 20px;
    height: 20px;
    z-index: 2;
    background: #eee;
}
.timeline ul li div {
    position: relative;
    bottom: 0;
    width:400px;
    padding: 20px;
    background: #fff;
    box-shadow: 4px 13px 30px 1px rgba(1, 0, 56, 0.1);
    border-radius: 5px;
    display: flex;
    align-items: center;
}
.timeline ul li div time {
    position: absolute;
    background: #f5af10;
    width: 100px;
    height: 20px;
    top: -15px;
    border-radius: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
    letter-spacing: 2px;
}
.timeline ul li div div {
    height: 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.timeline ul li div div p {
    text-align: center;
}
.timeline ul li div .discovery {
    margin-right: 10px;
}
.timeline ul li:nth-of-type(odd) > div {
    left: 45px;
}
.timeline ul li:nth-of-type(even) > div {
    left: -439px;
}

.timeline ul li div {
    visibility: hidden;
    opacity: 0;
    transition: all 0.5s ease-in-out;
}
.timeline ul li:nth-of-type(odd) div {
    transform: translate3d(100px, -10px, 0) rotate(10deg);
}
.timeline ul li:nth-of-type(even) div {
    transform: translate3d(-100px, -10px, 0) rotate(10deg);
}
.timeline ul li.in-view div {
    transform: none;
    visibility: visible;
    opacity: 1;
}

@media screen and (max-width: 900px) {
    .timeline ul li div {
        width: 250px;
        flex-direction: column;
    }
    .timeline ul li div div {
        width: 80%;
        margin: 10px;
    }
    .timeline ul li:nth-of-type(even) > div {
        left: -289px;
    }
}
@media screen and (max-width: 600px) {
    body {
        /*background: #8bfff4;*/
    }

    .timeline ul li {
        margin-left: 20px;
    }
    .timeline ul li div {
        width: calc(100vw - 91px);
    }
    .timeline ul li:nth-of-type(even) > div {
        left: 45px;
    }
}
